bag·​worm | \ ˈbag-ˌwərm How to pronounce bagworm (audio) \

Definition of bagworm

: any of a family (Psychidae) of moths with wingless females and plant-feeding larvae that live in a silk case covered with plant debris especially : one (Thyridopteryx ephemeraeformis) often destructive to deciduous and evergreen trees of the eastern U.S.

Examples of bagworm in a Sentence

Recent Examples on the Web Unfortunately, evergreen areas killed by bagworms do not regrow. Ellen Nibali,, "Garden Q&A: On how to deal with bagworms and stiltgrass," 4 Sep. 2019 The ideal time to spray for bagworm control is the first and second week of June with Malathion. Dick Crum, Indianapolis Star, "Dr. Dirt: Tulip trees suffer heat stress," 11 Aug. 2017 Subject to spider mites and occasionally bagworms, but both are easily stopped. Neil Sperry,, "Plan(t) on these top 10 best groundcover choices," 16 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'bagworm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of bagworm

1811, in the meaning defined above

Keep scrolling for more

Learn More about bagworm

Time Traveler for bagworm

Time Traveler

The first known use of bagworm was in 1811

See more words from the same year

Statistics for bagworm

Cite this Entry

“Bagworm.” Dictionary, Merriam-Webster, Accessed 5 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Comments on bagworm

What made you want to look up bagworm? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Who Knew?

Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!